In two easy steps.
Step one: when the Pennsylvania Academy of Fine Arts sells a $40 million Hopper in order to buy a bunch of contemporary art, say nothing. Relax. No reason to be so touchy.
Step two: when the Delaware Art Museum announces plans to sell $30 million worth of art in order to keep from closing, get out the pitchforks. Act as outraged as possible. Rend garments. And most of all: PUNISH THEM.
A little thing called ethics, my friends. Get with the program.